The only reason Netflix appears to support DRM is because they get content from organizations that demand it.
Today, we're excited to announce, blah, blah
People who don't like DRM and only use it out of supposedly necessity (bad excuse if you ask me), won't be excited about it.
Also, Netflix is supposedly streaming some content that they own themselves. Is it offered DRM free?
Well, Netflix is in the business of renting video, not in the business of fighting DRM.